Hook coupling



FIG. 1 illustrates a side perspective view of a hook coupling employing an ornamental design in accordance with the present invention;

FIG. 2 illustrates a side plan view of the hook coupling of FIG. 1;

FIG. 3 is a top plan view of the hook coupling of FIG. 1;

FIG. 4 is a side plan view of the hook coupling of FIG. 1;

FIG. 5 is a back plan view of the hook coupling of FIG. 1;

FIG. 6 is a bottom plan view of the hook coupling of FIG. 1; and,

FIG. 7 is a front plan view of the hook coupling of FIG. 1. 

The ornamental design for a hook coupling, as shown and described. 